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Energy and Current Density Measurements of RITS-6 Large-Area Diode Electron Beam

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5 Author(s)
Webb, T.J. ; Adv. Radiographic Technol. Dept., Sandia Nat. Labs., Albuquerque, NM, USA ; Hahn, K.D. ; Johnston, M.D. ; Oliver, B.V.
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The depth-dose measurements of Radiographic Integrated Test Stand-6 large-area diode electron beam operating at approximately 10-MV peak voltage suggest a 10 ?? 0.5-MeV equivalent monoenergetic electron beam. The unfolded electron spectrum reveals electrons > 1 MeV above the peak magnetically insulated transmission line voltage. The 1-D slices of the beam spatial profile obtained in the depth-dose measurements observe greater than 20% nonuniformity in the beam current density. The time-resolved measurements of the beam current density profile using images of beam-generated Cerenkov light show 2-D nonuniformities in the beam current density that change slowly during the 60-ns pulse, which do not depend strongly on the cathode surface condition.

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Plasma Science, IEEE Transactions on  (Volume:38 ,  Issue: 4 )